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Code Quiz: IMC Used in Corrosive Environments

2014-10-08 19:41:23| Electrical Construction & Maintenance

When installing intermediate metal conduit (IMC), elbows, couplings and fittings in corrosive environments, such as in concrete or direct contact in the earth or areas subject to severe corrosive influences, the IMC shall be protected by corrosion protection and _________________. read more

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Code Quiz: Pendant Box Support Requirements

2014-09-24 17:41:17| Electrical Construction & Maintenance

By Steven Owen, National Code Seminars When installing a single rigid metal or intermediate metal conduit to support a pendant box that supports a luminaire, the threaded joints shall be prevented from loosening by _______. read more

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Code Quiz: Support Wire Requirements in Suspended Ceilings

2014-09-10 21:41:53| Electrical Construction & Maintenance

By Steven Owen, National Code Seminars When installing an enclosure (such as a 4 x 2 1/8 in. square metal box) above a suspended ceiling by means of support wires, the enclosure shall be secured using _________. The support wires shall be _____ within the ceiling cavity. read more

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Code Quiz: Raceways in Wet Locations Abovegrade

2014-08-21 17:37:46| Electrical Construction & Maintenance

By Steven Owen, National Code Seminars When installing a THHN / THWN insulated conductor in a raceway that is located on the outside wall of a building or structure (wet location), the choice for the type of conductor insulation is permitted to be based on _____________. A. the use of THHN insulation rating, based on a dry location rating, as the inside of the raceway is considered to be a dry location. The installation shall also comply with 310.10(C). read more

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